RadSim vs Ghost Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RadSim
Master radiologic technology with an interactive simulator and comprehensive positioning guide. Practice x-ray techniques and learn precise patient positioning for various anatomy regions. Designed for students and professionals to enhance clinical confidence and accuracy.
- X-ray simulator with adjustable settings
- Positioning dictionary for anatomy regions
- Clinical guides for CR placement and SID
- Practice ARRT exam preparation
- Interactive learning platform
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Master Radiologic Technology with RadSim. RadSim is an essential educational tool designed for radiologic technology students and professionals. Whether you are preparing for the ARRT exam or looking to refine your clinical skills, RadSim provides a comprehensive, interactive platform to practice and learn. Key Features: X-ray Simulator: Experiment with kVp, mAs, SID, and Grid settings to see real-time effects on image quality. Positioning Dictionary: Access a detailed library of anatomy regions including Chest, Abdomen, Upper/Lower Extremities, Spine, and more. Clinical Guides: Get precise instructions on Central Ray (CR) placement, SID requirements, and patient positioning for every view. Pro Features: Unlock advanced parameters and the complete anatomy database for professional-level study. Designed by technologists for technologists. Boost your clinical confidence and technical accuracy with RadSim today. (Note: This application is for educational purposes only and should not be used for medical diagnosis or treatment on real patients.)
Ghost Reader
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Ghost Reader is your personal document reader for Apple Watch. Transfer your own PDF and Word files from iPhone to Watch in seconds and read them anywhere with no internet connection. The app is built for students, researchers, and professionals who want fast access to their own notes, lectures, manuals, and formulas right on the wrist. KEY FEATURES: - FORMAT SUPPORT: Import PDF or Word (docx). The built-in converter re-flows text for a perfect fit on the watch screen. - SMART JUMP-TO-NUMBER: Enter a number and the app instantly jumps to the matching section based on your chosen keyword. - VECTOR FORMULAS: Mathematical and physics formulas render with perfect clarity, no blurry pixels (MathJax/LaTeX support). - FULL READING CUSTOMIZATION: Change font size (9-24pt), font design (default, rounded, monospaced, serif), spacing, and themes (white, matrix green, retro amber, soft gray). - DARK & LIGHT MODES: Read comfortably in any lighting; invert image colors when needed. - 100% OFFLINE: Once synced, documents are stored on your watch and accessible without a network. - PRIVATE BY DESIGN: No servers, accounts, trackers, or analytics. Your files stay on your devices. Note: For fast synchronization, keep your Apple Watch near your iPhone while transferring files. ALSO: • Share → GhostReader: send PDF, Word and text straight from Files, Safari or Mail • Paste text from the clipboard and read it on your watch in seconds • Continue where you left off: the watch remembers your screen in every document • iCloud sync: your library appears on all your devices (optional, private to your Apple Account) • Siri and Shortcuts: “Continue reading in GhostReader”, open a document by name, send everything to the watch • Discreet clock: switch the document to a plain clock and back with Double Tap or a long press • Support for .txt and .md files
Screenshots
Verdict
The clearest difference is in-app purchases: Ghost Reader at none against RadSim's 1. RadSim's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RadSim sells 1 one-off in-app purchase. Ghost Reader asks for nothing beyond the download.
| Parameter | RadSim | Ghost Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 20 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Chaofan Duan | Trofim Panasik |
In-app purchases
RadSim
- Unlock Pro$9.99
Ghost Reader
No in-app purchases









